Intelligent entrance guard unlocking system and unlocking method thereof

ABSTRACT

An intelligent entrance guard unlocking method includes: transmitting electric energy of a power unit of a intelligent entrance guard in a wireless electromagnetic radiation via a transmit coil; receiving the electric energy via a receiver coil of a powerless smart key; capturing a fingerprint image of an user and storing the fingerprint image in a second storage unit of the powerless smart key; controlling a wireless transmit unit of the powerless smart key to transmit a wireless signal containing the fingerprint image to the intelligent entrance guard; obtaining a predefined fingerprint image from a first storage unit of the intelligent entrance guard and comparing the fingerprint image with the predefined fingerprint image; unlocking the intelligent entrance guard when the fingerprint image matches with the predefined fingerprint image and not unlocking the intelligent entrance guard when the fingerprint image does not match with the predefined fingerprint image.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims all benefits accruing under 35 U.S.C. §119 fromTW Application No. 104103797, filed on Feb. 4, 2015, in the TaiwanIntellectual Property Office, the disclosure of which is incorporatedherein by reference. The application is also related to co-pendingapplications entitled, “INTELLIGENT ENTRANCE GUARD UNLOCKING SYSTEM ANDUNLOCKING METHOD THEREOF” (Ser. Nos. 14/755,867, 14/755,846, 14/755,911,14/755,887). Such applications have the same assignee as the instantapplication and are concurrently filed herewith. The disclosure of theabove-identified applications is incorporated herein by reference.

FIELD

The subject matter herein generally relates to an unlocking system andan unlocking method for an intelligent entrance guard.

BACKGROUND

In order to control entrance to a room or a device, a security system oradmittance system can be implemented. Traditional systems have includeda physical key. A physical key requires the operator to maintainpossession of the physical key for both entrance and preventing othersfrom entrance. Other systems involve electronic devices that communicatevia wired or wireless technology. These systems can include batteries tooperate.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the present disclosure are better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the views.

FIG. 1 is a block diagram of an embodiment of an intelligent entranceguard unlocking system.

FIGS. 2 and 3 cooperatively constitute a signal flowchart of anembodiment of an intelligent entrance guard unlocking method.

DETAILED DESCRIPTION

It will be appreciated that for simplicity and clarity of illustration,where appropriate, reference numerals have been repeated among thedifferent figures to indicate corresponding or analogous elements. Inaddition, numerous specific details are set forth in order to provide athorough understanding of the embodiments described herein. However, itwill be understood by those of ordinary skill in the art that theembodiments described herein can be practiced without these specificdetails. Also, the description is not to be considered as limiting thescope of the embodiments described herein. The drawings are notnecessarily to scale and the proportions of certain parts may beexaggerated to better illustrate details and features of the presentdisclosure.

Definitions that apply throughout this disclosure will now be presentedbelow.

The term “coupled” is defined as connected, whether directly orindirectly through intervening components, and is not necessarilylimited to physical connections. The connection can be such that theobjects are permanently connected or releasably connected. The term“comprising,” when utilized, means “including, but not necessarilylimited to”; it specifically indicates open-ended inclusion ormembership in the so-described combination, group, series and the like.

FIG. 1 shows an intelligent entrance guard unlocking system 1 for avehicle. The intelligent entrance guard unlocking system 1 can be run onbut not limited to an intelligent entrance guard 100 and a powerlesssmart key 200. The intelligent entrance guard 100 can automaticallypower the powerless smart key 200 when a distance between the powerlesssmart key 200 and the intelligent entrance guard 100 is in an allowedrange. A identity information can be captured by the powerless smart key200 and transmitted by thereof to the intelligent entrance guard 100 foridentification and reorganization.

The intelligent entrance guard 100 can include a first controller 10, apower unit 11, a current transmitter 12, a transmit coil 13, a firststorage unit 14, a wireless receiver unit 15, and an unlocking unit 16.The first controller 10 can be coupled to the first storage unit 14. Thepower unit 11 can be used for supplying electric energy. The power unit11 can be a battery. In other embodiments, the power unit 11 can becoupled with a power source. The current transmitter 12 can beelectrically coupling the power unit 11 with the transmit coil 13. Thewireless receiver unit 15 can be coupled to the first controller 10. Theunlocking unit 16 can be coupled to the first controller 10.

The first storage unit 14 can be used to store a predefinedidentification code and a predefined fingerprint image. In at least oneembodiment, the predefined identification code can be an identificationcode of a smart key matched with the intelligent entrance guard 100, andthe fingerprint image can be an fingerprint image of a valid user of theintelligent entrance guard 100.

The powerless smart key 200 can include a current receiver 21, areceiver coil 22, a current convertor 23, a second controller 24, afingerprint capturing unit 25, a second storage unit 26 and a wirelesstransmit unit 27. The current receiver 21 can be electrically coupled tothe receiver coil 22 and configured to receive electric energy via thereceiver coil 22, such that the powerless smart key 200 can be powered.The second controller 24 can be coupled to the wireless transmit unit 27and the storage unit 26. The fingerprint capturing unit 25 can becoupled to the second storage unit 26.

The fingerprint capturing unit 25 can be used to capture a fingerprintimage of a user. The fingerprint capturing unit 25 can be a camera.

The second storage unit 26 can be used to store the fingerprint imagetransmitted by the fingerprint capturing unit 25 and a uniqueidentification code of the powerless smart key 200. In otherembodiments, the second storage unit 26 of the powerless smart key 200can be omitted, and the fingerprint image transmitted by the fingerprintcapturing unit 25 and the unique identification code can be stored in astorage unit coupled to the powerless smart key 200.

The current transmitter 12 of the intelligent entrance guard 100 cantransmit electric energy of the power unit 11 by wirelesselectromagnetic radiation via the transmit coil 13. The current receiver21, if it is within a predefined distance of the transmit coil 13, canreceive the electric energy via the receiver coil 22 and power thepowerless smart key 200 using the received electric energy.

The powerless smart key 200, when being powered, is configured to be ina working mode. That is, the fingerprint capturing unit 25 can capturethe fingerprint image of the user and store the fingerprint image in thesecond storage unit 26. The second controller 24 can obtain the uniqueidentification code and the fingerprint image from the second storageunit 26 and control the wireless transmit unit 27 to transmit a wirelesssignal containing the unique identification code and the fingerprintimage. The wireless receiver unit 15 of the intelligent entrance guard100 can receive the wireless signal from the powerless smart key 200.The first controller 10 can obtain the unique identification code andthe fingerprint image from the wireless signal. The first controller 10can compare the unique identification code obtained from the wirelesssignal to the predefined identification code stored in the storage unit14. The first controller 10 can also compare the fingerprint imageobtained from the wireless signal to the predefined fingerprint imagestored in the first storage unit 14 of the intelligent entrance guard100. If the unique identification code matches the predefinedidentification code and the fingerprint image matches the predefinedfingerprint image, the unlocking unit 16 of the intelligent entranceguard 100 can control to unlock the intelligent entrance guard 100, suchas unlock intelligent entrance guard door (not shown) of the intelligententrance guard 100.

The current transmitter 12 can electrically couple the power unit 11with the transmit coil 13. In the embodiment, the current transmitter 12can be a current transmission circuit, and used to optimize the electricenergy received from the power unit 11. The current transmitter 12 canreceive electric energy supplied by the power unit 11, filter noises ofthe received electric energy, and transmit the filtered electric energyin a way of wireless electromagnetic radiation via the transmit coil 13.In this embodiment, the electric energy can be alternating current.

The current receiver 21 can electrically couple with the receiver coil22, and be used to receive the electric energy from the transmit coil 13via the receiver coil 22. In the embodiment, the current receiver 21 canbe a current receiving circuit, and is used to filter noises of theelectric energy received from the receiver coil 22. The electric energycan be alternating current. The receiver coil 22 can be coupled with thetransmit coil 13. The transmit coil 13 can cause the receiver coil 22generate induced current in a form of electro-magnetic induction. Theinduced current can be alternating current.

The current convertor 23 can be used to convert the alternating currentinto direct current and power the powerless smart key 200 via thecurrent.

The fingerprint capturing unit 25 can capture the fingerprint of theuser and further store the fingerprint image in the second storage unit26. The fingerprint capturing unit 25 can include a fingerprintcapturing module 251, a signal convertor 253, and a signal transmitter255. The fingerprint capturing module 251 can be used to capture thefingerprint image of the user. The signal convertor 253 can be used toconvert the fingerprint image to be a fingerprint data under identify.The signal transmitter 255 can be used to transmit the fingerprint dataunder identify to the second storage unit 26. Furthermore, thefingerprint capturing module 251 can include a receiving screenpositioned on the powerless smart key 200. The user put her or hisfingertip on the receiving screen, and a fingerprint can be left on thereceiving screen, and the fingerprint capturing module 251 can scan thefingerprint image. In an illustrated embodiment, the receiving screen isa touch screen. In other embodiment, the fingerprint capturing unit 25can directly transmit the fingerprint image to the storage withoutconverting.

The second controller 24 can electrically couple the second storage unit26 with the wireless transmit unit 27 and be used to obtain the uniqueidentification code and the fingerprint image from the second storageunit 26 after the powerless smart key 200 has been powered. Further, thesecond controller 24 can control the wireless transmit unit 27 totransmit the wireless signal containing the unique identification codeand the fingerprint image.

The first controller 10 can electrically couple the wireless receiverunit 15 with the first storage unit 14 respectively and be used toreceive the wireless signal via the wireless receiver unit 15.Additionally, the first controller 10 can obtain the uniqueidentification code and the fingerprint image from the wireless signaland compare the predefined identification code obtained from the firststorage unit 14 with the unique identification code. The firstcontroller can compare the predefined fingerprint image obtained fromthe first storage unit 14 with the fingerprint image.

The unlocking unit 16 can control to unlock the intelligent entranceguard 100 when the unique identification code is matched with thepredefined identification code and the fingerprint image is matched withthe predefined fingerprint image. The unlocking unit 16 cannot controlto unlock the intelligent entrance guard 100 when the uniqueidentification code is not matched with the predefined identificationcode and/or the fingerprint image is not matched with the predefinedfingerprint image.

In at least one embodiment, the intelligent entrance guard 100 canfurther include a first current-stabilizing unit 17. The firstcurrent-stabilizing unit 17 can electrically couple the power unit 11with the current transmitter 12, and be used to stabilize the current ofthe power unit 11 to prevent the current to exceed a predefined valuesuddenly, which may damage the electronic components of the intelligententrance guard 100.

In at least one embodiment, the intelligent entrance guard 100 canfurther include a light controlling unit 18 and a light emitting unit19. The light controlling unit 18 can electrically couple the firstcontroller 10 with the light emitting unit 19. The light controllingunit 18 can be used to control the light emitting unit 19 to emit lightwith one color to prompt the user that the verification is successfulwhen the unique identification code is matched with the predefinedidentification code and the fingerprint image is matched with thepredefined fingerprint image. The light controlling unit 18 can furthercontrol the light emitting unit 19 to emit light with another color toprompt the user that the verification is unsuccessful when the uniqueidentification code is not matched with the predefined identificationcode and/or the fingerprint image is not matched with the predefinedfingerprint image.

In at least one embodiment, the powerless smart key 200 can furtherinclude a second current-stabilizing unit 28. The secondcurrent-stabilizing unit 28 can couple the current receiver 21 with thecurrent convertor 23 and be used to stabilize the current of thereceived alternating current to prevent the current to exceed apredefined value suddenly, which may damage the electronic components ofthe powerless smart key 200.

In at least one embodiment, if the received electric energy is directcurrent, the current convertor 23 can be thus omitted.

In at least one embodiment, the unique identification code matched withthe predefined identification code can be that the unique identificationcode is equal to the predefined identification code and/or the uniqueidentification code is uniquely corresponding to the predefinedidentification code.

In at least one embodiment, the fingerprint image matched with thepredefined fingerprint image can be that the fingerprint image is sameto the fingerprint image and/or the fingerprint image is uniquelycorresponding to the fingerprint image.

The above verification process can include the verification of theidentification code and the verification of the fingerprint image. In atleast one embodiment, and the verification of the identification codecan be omitted. Therefore, the second controller 24 can control thewireless transmit unit 27 to transmit the wireless signal containing thefingerprint image. The first controller 10 can compare the predefinedfingerprint image obtained from the first storage unit 14 with thefingerprint image. The unlocking unit 16 can control to unlock theintelligent entrance guard 100 when the fingerprint image is matchedwith the predefined fingerprint image. The unlocking unit 16 cannotcontrol to unlock the intelligent entrance guard 100 when thefingerprint image is not matched with the predefined fingerprint image.The light controlling unit 18 can control the light emitting unit 19 toemit light with one color to prompt the user that the verification issuccessful when the fingerprint image is matched with the predefinedfingerprint image, and further control the light emitting unit 19 toemit light with another color to prompt the user that the verificationis unsuccessful when the fingerprint image is not matched with thepredefined fingerprint image.

The intelligent entrance guard unlocking method is provided by way ofexample, as there are a variety of ways to carry out the method. Thecontrol method described below can be carried out using theconfigurations illustrated in FIG. 1, for example, and various elementsof these figures are referenced in explaining the example method. Eachblock shown in FIGS. 2 and 3 represents one or more processes, methods,or subroutines carried out in the example method. Furthermore, theillustrated order of blocks is by example only and the order of theblocks can be changed. Additional blocks may be added or fewer blocksmay be utilized, without departing from this disclosure. The examplemethod can begin at block 201.

Referring to FIG. 2, at block 201, a current transmitter of anintelligent entrance guard receives electric energy supplied by a powerunit of the intelligent entrance guard, and further transmits theelectric energy in a way of wireless electromagnetic radiation via atransmit coil of the intelligent entrance guard, and the electric energyis alternating current. The current transmitter of the intelligententrance guard can electrically couple the power unit with a transmitcoil of the intelligent entrance guard. In the embodiment, the currenttransmitter can be a current transmission circuit, and used to optimizethe electric energy received from the power unit. The currenttransmitter can receive electric energy supplied by the power unit,filter noises of the received electric energy, and transmit the filteredelectric energy in a way of wireless electromagnetic radiation via thetransmit coil. In this embodiment, the electric energy can bealternating current.

At block 202, a current receiver of powerless smart key receives theelectric energy transmitted by the transmit coil via a receiver coil ofa powerless smart key, and the electric energy is alternating current.The current receiver can be electrically coupled to the receiver coil.The current receiver can receive electric energy from the transmit coilwhen the current receiver is within a predefined distance of thetransmit coil.

At block 203, a current convertor of the powerless smart key convertsthe alternating current into direct current and power the powerlesssmart key via the received electric energy as if the powerless smart keyis powered by a battery of itself

At block 204, a fingerprint capturing unit of the powerless smart keycaptures a fingerprint image and further stores the fingerprint image ina second storage unit of the powerless smart key.

At block 205, a second controller of the powerless smart key obtains aunique identification code and the fingerprint image from the secondstorage unit of the powerless smart key after the powerless smart keyhas been powered, and further controls a wireless transmit unit totransmit a wireless signal containing the unique identification code andthe fingerprint image.

Referring to FIG. 3, at block 206, a first controller determines thepowerless smart key whether matches with the intelligent entrance guard,if yes, the process goes to block 207, otherwise, the process goes toblock 208. The first controller receives the wireless signal via awireless receiver unit of the intelligent entrance guard. The firstcontroller obtains the unique identification code and the fingerprintimage from the wireless signal. The first controller compares apredefined identification code obtained from a first storage unit of theintelligent entrance guard with the unique identification code, andfurther compares a predefined fingerprint image obtained from the firststorage unit of the intelligent entrance guard with the fingerprintimage. The first controller determines whether the unique identificationcode is matched with the predefined identification code and thefingerprint image is matched with the predefined fingerprint image, ifyes, the process goes to block 207, otherwise, the process goes to block208.

At block 207, a light controlling unit of the intelligent entrance guardcontrols a light emitting unit of the intelligent entrance guard to emitlight with one color to prompt the user that the verification issuccessful and an unlocking unit of the intelligent entrance guardunlocks the intelligent entrance guard.

At block 208, the light controlling unit controls the light emittingunit of the intelligent entrance guard to emit light with another colorto prompt the user that the verification is unsuccessful and theunlocking unit cannot unlock the intelligent entrance guard.

In other embodiments, the fingerprint capture module 231 can be designedto be in other structure, for example, the fingerprint capture module231 is a camera.

In other embodiments, the unlocking system for the intelligent entranceguard 100 is not limited to apply in a building, it can be used in otherareas desiring identify reorganization for safety, such as unlocking fora vehicle, a box, a cabinet, an electronic device.

The embodiments shown and described above are only examples. Manydetails are often found in the art such as the other features of anintelligent entrance guard unlocking system and unlocking methodthereof. Therefore, many such details are neither shown nor described.Even though numerous characteristics and advantages of the presenttechnology have been set forth in the foregoing description, togetherwith details of the structure and function of the present disclosure,the disclosure is illustrative only, and changes may be made in thedetails, including in matters of shape, size, and arrangement of theparts within the principles of the present disclosure, up to andincluding the full extent established by the broad general meaning ofthe terms used in the claims. It will therefore be appreciated that theembodiments described above may be modified within the scope of theclaims.

What is claimed is:
 1. A powerless smart key comprising: a receivercoil; a current receiver electrically coupled to the receiver coil, andconfigured to receive electric energy via the receiver coil such thatthe powerless smart key is powered directly by the received electricenergy and then the powerless smart key works; a fingerprint capturingunit coupled to a storage unit and configured to obtain a fingerprintimage of a user and further store the fingerprint image in the storageunit; a controller configured coupled to a wireless transmit unit withthe storage unit and configured to control the wireless transmit unit totransmit a wireless signal containing the fingerprint image to anintelligent entrance guard unlocking system; a current convertorelectrically coupling the current receiver with the controller; and acurrent-stabilizing unit electrically couple the current receiver withthe current convertor and configured to stabilize current of thereceived electric energy to prevent the current to exceed a predefinedvalue suddenly; wherein, another controller of the intelligent entranceguard unlocking system is configured for receiving the wireless signal,and determining whether the powerless smart key is matched with theintelligent entrance guard unlocking system according to the fingerprintimage.
 2. The powerless smart key of claim 1, wherein the storage unitfurther stores an identification code of the powerless smart key, thewireless signal further contains the identification code, and theintelligent entrance guard is capable of receiving the wireless signal,and determining whether the powerless smart key is matched with theintelligent entrance guard according to the fingerprint image and theidentification code.
 3. The powerless smart key of claim 1, furthercomprising the current convertor is configured to convert alternatingcurrent of electric energy into direct current so as to power thepowerless smart key.
 4. An intelligent entrance guard unlocking systemcomprising: a power unit configured for supplying electric power; acurrent transmitter electrically coupling the power unit with a transmitcoil, configured to receive electric energy supplied by the power unitand transmit the electric energy in a way of wireless electromagneticradiation via the transmit coil; a first controller coupled to powerunit; a first storage unit coupled to the first controller, andconfigured for storing a predefined fingerprint image; a wirelessreceiver unit coupled to the first controller; an unlocking unit coupledto the first controller; and a powerless smart key comprising: areceiver coil; a current receiver electrically coupled to the receivercoil and configured to receive the electric energy via the receiver coilsuch that the powerless smart key is powered directly by the receivedelectric energy and then the powerless smart key works; a fingerprintcapturing unit coupled to a second storage unit, and configured toobtain a fingerprint image of the user and further store the fingerprintimage in the second storage unit; a second controller coupled to awireless transmit unit with the second storage unit and configured tocontrol the wireless transmit unit to transmit a wireless signalcontaining the fingerprint image to the intelligent entrance guard; acurrent convertor electrically coupling the current receiver with thesecond controller; and a first current-stabilizing unit electricallycoupling the current receiver with the current convertor and configuredto stabilize current of the received electric energy to prevent thecurrent to exceed a predefined value suddenly; wherein, the wirelessreceiver unit receives the wireless signal, the first controller isconfigured to obtain the predefined fingerprint image from the firststorage unit and compare the fingerprint image with the predefinedfingerprint image, and the unlocking unit is configured to unlock whenthe fingerprint image matches with the predefined fingerprint image. 5.The intelligent entrance guard unlocking system of claim 1, wherein theintelligent entrance guard unlocking system further comprises a lightcontrolling unit and a light emitting unit, the light controlling unitelectrically couples the first controller with the light emitting unitand is configured to control the light emitting unit to emit light withone color when the fingerprint image matches with the predefinedfingerprint image and further control the light emitting unit to emitlight with another color when the fingerprint image does not match withthe predefined fingerprint image.
 6. The intelligent entrance guardunlocking system of claim 1, wherein the first storage unit furtherstores a predefined identification code, and the second storage unitfurther stores an identification code of the powerless smart key, thewireless signal further contains the identification code, and the firstcontroller is further configured to obtain the predefined identificationcode from the first storage unit and compare the identification codewith the predefined identification code, and the unlocking unit isconfigured to unlock when the fingerprint image matches with thepredefined fingerprint image and the identification code matches withthe predefined identification code, and the unlocking unit is configuredto not unlock when the fingerprint image does not match with thepredefined fingerprint image or the identification code does not matchwith the predefined identification code.
 7. The intelligent entranceguard unlocking system of claim 6, wherein the intelligent entranceguard unlocking system further comprises a light controlling unit and alight emitting unit, the light controlling unit electrically couples thefirst controller with the light emitting unit, and is configured tocontrol the light emitting unit to emit light with one color when thefingerprint image matches with the predefined fingerprint image and theidentification code matches with the predefined identification code, andfurther control the light emitting unit to emit light with another colorwhen the fingerprint image does not match with the predefinedfingerprint image or the identification code does not match with thepredefined identification code.
 8. The intelligent entrance guardunlocking system of claim 1, wherein the intelligent entrance guardunlocking system further comprises a second current-stabilizing unitelectrically coupling the power unit with the current transmitter andconfigured to stabilize current of the power unit to prevent the currentto exceed a predefined value suddenly.
 9. The intelligent entrance guardunlocking system of claim 1, wherein the current convertor is configuredto convert alternating current of electric energy into direct current soas to power the powerless smart key.
 10. An intelligent entrance guardunlocking method comprising: transmitting electric energy of a powerunit of an intelligent entrance guard in a way of wirelesselectromagnetic radiation via a transmit coil; receiving the electricenergy via a receiver coil of a powerless smart key such that thepowerless smart key is powered directly by the received electric energyand then the powerless smart key works; stabilizing current of thereceived electric energy to prevent the current to exceed a predefinedvalue suddenly; capturing a fingerprint image of an user and furtherstoring the fingerprint image in a second storage unit of the powerlesssmart key; controlling a wireless transmit unit of the powerless smartkey to transmit a wireless signal containing the fingerprint image tothe intelligent entrance guard; obtaining a predefined fingerprint imagefrom a first storage unit of the intelligent entrance guard andcomparing the fingerprint image with the predefined fingerprint image;unlocking the intelligent entrance guard when the fingerprint imagematches with the predefined fingerprint image; and not unlocking theintelligent entrance guard when the fingerprint image does not matchwith the predefined fingerprint image.
 11. The intelligent entranceguard unlocking method of claim 10, further comprising: controlling alight emitting unit of the intelligent entrance guard to emit light withone color when the fingerprint image matches with the predefinedfingerprint image; and controlling the light emitting unit to emit lightwith another color when the fingerprint image does not match with thepredefined fingerprint image.
 12. The intelligent entrance guardunlocking method of claim 10, wherein the wireless signal furthercontains the identification code, the intelligent entrance guardunlocking method further comprises: obtaining a predefinedidentification code from the first storage unit; comparing theidentification code with the predefined identification code; unlockingthe intelligent entrance guard when the fingerprint image matches withthe predefined fingerprint image and the identification code matcheswith the predefined identification code; and not unlocking theintelligent entrance guard when the fingerprint image does not matchwith the predefined fingerprint image or the identification code doesnot match with the predefined identification code.
 13. The intelligententrance guard unlocking method of claim 12, further comprising:controlling a light emitting unit of the intelligent entrance guard toemit light with one color when the fingerprint image matches with thepredefined fingerprint image and the identification code matches withthe predefined identification code; and controlling the light emittingunit to emit light with another color when the fingerprint image doesnot match with the predefined fingerprint image or the identificationcode does not match with the predefined identification code.
 14. Theintelligent entrance guard unlocking method of claim 10, furthercomprising: stabilizing current of the power unit to prevent the currentto exceed a predefined value suddenly.
 15. The intelligent entranceguard unlocking method of claim 10, further comprising: convertingalternating current of the electric energy into direct current so as topower the powerless smart key.